Finding the Fourth Proportional to 97,115,909.40, 145,673,864.10 and 66,504,907.80
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Solution
The fourth proportional to 97,115,909.40, 145,673,864.10 and 66,504,907.80 is: 99,757,361.70
Step by Step Solution
- Step 1: Write the proportion equation
97,115,909.40 : 145,673,864.10 = 66,504,907.80 : x - Step 2: Convert to fraction form
97,115,909.40/145,673,864.10 = 66,504,907.80/x - Step 3: Cross multiply
97,115,909.40x = 145,673,864.10 × 66,504,907.80 - Step 4: Simplify right side
97,115,909.40x = 9,688,026,900,840,230 - Step 5: Solve for x
x = 9,688,026,900,840,230/97,115,909.40 - Step 6: Final answer
x = 99,757,361.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.